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1.
1. When the partner performing fellatio takes only the head of the penis into his or her mouth.

2. During intercourse, when a male inserts only the head of his penis, delaying full penetration.
"Damn man, Amber was doing such a head tease on me last night! She just would not take it all the way in."

"I love it when Jamie head teases me - I get so turned on when he just has the tip inside me."
by Cassandra Block January 13, 2007